Ключевые слова: ac, ampere, background, black, cable, closeup, color, concept, conductor of electricity, connect, connection, cord, digitally, electric, electrical, electricity, electronic, energy, equipment, group, home, industry, isolated, line, metal, object, office, ohm, pin, plug, polarity, power, prong, shape, single, spark, supply, technology, volt, voltage, white, wired,